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AAM 14 Bolt, Rear Differential Cover
|Black powder coating
Check your factory fluid change procedure before ordering. If you need a large level check hole, for example a hole you can stick your finger in, this cover may not work for you.
Volume: approximately 0.6 quarts over stock
Dimensions:: approximately 3.4 inches deep, 0.25 more than stock cover
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2019 and newer Ram 2500 and Ram 3500 trucks may have a new American Axle Manufacturing (AAM) 14 bolt differential. The ring gear may be 11.8 or 12 inches, instead of 11.5.
PML designed this differential cover based on the stock cover from a 2019 Ram 2500, which has a slightly different shape and bolt hole pattern than 2018 and older trucks.
This new PML cover is an updated version of PML part number 11147.
We have seen this new differential on:
Configurations vary. Always check your vehicle.
2020 and newer GM heavy duty trucks have a similar cover on this new AAM differential. See PML part number 11173.
Power Wagons may still have the 2018 and older AAM differential.
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Let us know if you are interested in a cover for this new differential.
Drain, Fill and Level Check on PML Cover
On this PML cover, the level check is the small hole on the side. There is a fill hole on the top and drain on the bottom.
A magnetic drain plug and plugs for the level check and fill holes are included.
Check your factory fluid change procedure before ordering. The fluid level check procedure is the same with the stock cover as with the PML cover. On the PML cover, the level check hole diameter is about 0.300 (3/8) inch. If a larger level check hole is needed, do not order this cover.
Inside of PML Cover
Gasket on PML cover Click on image to view larger.
Included With PML Cover
PML includes new mounting bolts, fill plug, level check hole plug, and a magnetic drain plug with each cover. The washer for the magnetic drain plug can be reused.
The covers and gaskets for 2019 and newer and pre–2019 are similar to earlier years but NOT interchangeable.
2019 and newer Ram stock cover. Outside and inside.
2003 to 2018 Ram 3500 stock cover (also some 2003 to 2013 Ram 2500) and 2014 to 2018 Ram 2500 stock cover.
First picture shows 2019 and newer gasket next to an older gasket for 11.5, 11.8 differentials. Second and third pictures shows an attempt to put the older gasket on a 2019 Ram 2500 stock cover.
These pictures show a gasket from a pre-2019 AAM 14 bolt cover on a 2019 Ram 2500 truck. The top and bottom bolt holes lined up but none of the other holes.
2019 Ram 2500 Diesel
Craig installed this differential cover on a 2019 Ram 2500 diesel with stock pan hard and sway bars. He used the stock bolt for the clip on the right side after removing the bolt flange. He unbolted the track and sway bars for the installation and added about 4 3/4 quarts of fluid total.
2019 Ram 2500 Diesel Hellwig Sway Bar
This part was successfully installed on a 2019 Ram 2500 Diesel Truck with coil suspension and a Hellwig sway bar.
Our thanks to Dave for working with us. Pictures from his installation are below:
2019 Ram 3500 Diesel
Don installed PML front and rear differential covers on his 2019 Ram 3500 4x4 SRW with the 6.7 Diesel. Installation was straight forward and he did it in his driveway.
2019 Ram 3500 4x4
Stock front and rear differential covers
PML front differential cover installed
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